[PATCH] posix_cpu_timer: uninitialized variable use in posix_cpu_timer_get()

From: Alexey Dobriyan
Date: Thu Jul 07 2016 - 18:39:31 EST


Variable "now" seems to be genuinely used unintialized
if branch

if (CPUCLOCK_PERTHREAD(timer->it_clock)) {

is not taken and branch

if (unlikely(sighand == NULL)) {

is taken.

I don't know this code to judge what should be done, could someone
please look at it?

Signed-off-by: Alexey Dobriyan <adobriyan@xxxxxxxxx>
---

kernel/time/posix-cpu-timers.c | 1 +
1 file changed, 1 insertion(+)

--- a/kernel/time/posix-cpu-timers.c
+++ b/kernel/time/posix-cpu-timers.c
@@ -777,6 +777,7 @@ static void posix_cpu_timer_get(struct k_itimer *timer, struct itimerspec *itp)
timer->it.cpu.expires = 0;
sample_to_timespec(timer->it_clock, timer->it.cpu.expires,
&itp->it_value);
+ return;
} else {
cpu_timer_sample_group(timer->it_clock, p, &now);
unlock_task_sighand(p, &flags);